feat(referrals): add referral attribution and daily login rewards

- Track referral attribution at registration via ?ref code with
  same-IP and duplicate-pair guards
- Add daily login rewards with streak tracking, claim flow and
  sendCurrency payout backed by RCON with DB fallback
- Add admin pages for referral settings and the daily reward schedule
- Add migration 0033 with tables, seed schedule, settings and ACL grants
- Add admin.referrals.* and admin.dailyrewards.* permission slugs
- Localize new copy in en, nl and it

src/lib/admin-nav.ts

@@ -4,6 +4,7 @@ import {
 	BadgeCheck,
 	Ban,
 	Calendar,
+	CalendarCheck,
 	CalendarDays,
 	ClipboardList,
 	Cog,
@@ -11,6 +12,7 @@ import {
 	FileText,
 	Filter,
 	Gavel,
+	Gift,
 	HelpCircle,
 	Image,
 	KeyRound,
@@ -526,6 +528,20 @@ export const ADMIN_NAV_GROUPS: AdminNavGroup[] = [
 				permission: PERMS.SHOP_VIEW,
 				matchPrefixes: ["/admin/calendar"],
 			},
+			{
+				href: "/admin/referrals",
+				labelKey: "referrals",
+				icon: Gift,
+				permission: PERMS.REFERRALS_VIEW,
+				matchPrefixes: ["/admin/referrals"],
+			},
+			{
+				href: "/admin/daily-rewards",
+				labelKey: "dailyRewards",
+				icon: CalendarCheck,
+				permission: PERMS.DAILY_REWARDS_VIEW,
+				matchPrefixes: ["/admin/daily-rewards"],
+			},
 		],
 	},
 	{